Tired of trying to find an outlet to charge your cell phone, iPod, and computer while on the go? Then what you need is a solar powered bag to charge all your devices and free yourself from the grid. Our friends over at Planet Green are giving away 2 Voltaic Solar backpacks each week this summer, and all you have to do is enter you name to win one! The contest just started this month and runs through until December 8th, 2009, so enter today for a shot at winning one of these fantastic Voltaic Backpacks, which have 3 solar panels and are made with fabric from recycled plastic bottles.